Machine for cleaning bobbins.



W. W! LINDER. MACHINE FOR CLEANING BOBBINS.

APPLICATION FILED FEB. I7. 1917- Patented July 16, 1918.

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W. W. UNDER.

MACHINE FOR CLEANING ROBBINS APPLICATION FILED FEB. 11. 1917 Patented July 16, 1918.

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W. W. LINDER.

MACHINE FOR CLEANING BOBBINS.

I APPLICATION FILED FEB-11.15"]- 1 73,075. Patented Ju1y16, 1918,

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W. W. UNDER.

MACHINE FOR CLEANLNG BOBBINS.

APPLICATION FILED FEB. :1. I911.

' Patented July 16, 1918.

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MACHINE FOR CLEANING BOBBINS.

1,273,075. APPLICATION FILED FEB. II, 191 I. Patented 16 7 SHEETSSHEET 5.

w.' w. UNDER.

MACHINE FOR CLEANING BOBBINS.

APPLICATION FILED FEB. I7, 1917.

Patented July 16, 1918.

I SHEETS-SHEET 6 W. W. UNDER- MACHINE FOR CLEANING Bosams. APPLICATION FILED FEB. 1h I917.

Patented July 16, 1918.

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WALTER W. LINDEB, F COOIJEEMEE, NORTH CAROLINA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO TERRELL MACHINE COMPANY, A CORPORATION OF NORTH CAROLINA.

MACHINE FOR CLEANING BOBBIN-S.

Specification of Letters Patent.

' Patented July 16, 1918.

Application filed February 17, 1917. Serial No. 149,293.

To all whom it may concern :1

Be it. known that I, WVALTER W. LINDER, a citizen of the United Statesof America, and a resident of Cooleemee, county of Davie, State of North Carolina, have invented certain new and useful Improvements in Machines for Cleaning Bobbins, of which the following is a full and clear specification.

This invention has relation to that type of bobbin cleaners in which the bobbin spindle containing the waste is drawn endwisely between a pair of strippers to thus scrape the waste yarn off the small end of the spindle, and the object of the invention is to improve and simplify this type of machine and to increase the output to maximum, as more fully hereinafter set forth.

In the drawings Figure 1 is a side elevation and t Fig.2 is a plan view of a machine embodying my invention Fig. 3 is a view, partly in end elevation and partly in vertical section, of the machine;

F ian enlarged plan view of the main parts of the machine;

Fig. a view, partly in plan and partly in section, of a modified gripper device; and

Figs. 5 to it are views of after described.

In this machine, mechanisms are arranged at opposite ends of the bed of the machine, these mechanisms being brought into action alternately and both sets of mechanisms being actuated from a central vertical shaft arranged under the bed of the machine. This shaft is driven in any suitable manner, preferably from a details hereintransverse power shaft 11 carrying a bevel gear 12 on its inner end whichmeshes with a crown bevel wheel 13 afiixed to said shaft 10. The bevel pinion 12 is loose on the shaft 11 and is adapted to be clutched thereto by a suitable clutch 1a which is adapted to be thrown into and out of operation by suitable devices that are operable from either end of the machine. In the drawing, I have shown a vertical lever 15 at each end of the machine connected together by a rod 16 which is connected about midway its length by a bell crank 17 with the sliding member of the clutch, whereby an operator at either endof the machine may either stop or start the machine. i

On the'upper end of the shaft 10 is a horiduplicate stripping zontal crank arm 18 which is provided at its end with a roller 19 which works in'a longitudinal groove formed in a transverse bar 20, this bar being rigidly afiiXed to a slide plate 21 mounted to slide longitudinally in the bed of the machine. 7

At each end of the sliding plate 21 is mounted on pivots 22 a pair of jaws 23 whose outer ends are shaped to properly grasp the wired head of the bobbin and whose inner ends are normally pressed apart by means of an interposed coil spring 24, suitable vertical'stop pins or lugs 25 being mounted on the sliding plate to limit the in ward as well as the outwardmovements of these jaw levers. A latch 26 is pivoted on one of the levers and extended across the other lever and adapted to engage over :1 lug 27 carried by said other lever to hold the gripping ends of the jaws apart, a retractile spring 27 being employed to hold this latch in normal engagement with its catch lug 27.

The bobbin to be stripped is delivered by hand or by suitable mechanism, such as that hereinafter described, with its head resting upon a pair of inwardly-extending plates 28 affixed to the bed plate at a point adjacent to the limit of the throw of the main slide 2]., and'when the adjacent end of this main slide is at the limit of its outward'movement, the gripping ends of the jaw levers 23 lie directly over said supporting plates 28. To assist in properly positioning the bobbin on these supporting plates 28, I provide'an ad-- justable stop 29 which is affixed to the slide plate and is adapted, when the slide plate is at the outer limit of its movement, to lie between the gripping ends of the jaws and just inside of the supporting plates 28. When the mechanism has moved the adjacent end of the slide outwardly far enough to bring the gripping ends of its jaws into position to grip the bobbin head which rests upon the plates 28, an adjustable stop 30 on the bed plate of the machine automatically unlatches the latch 26 and thus allows spring 24 to close the aws upon the bobbin head, the op-. posite reciprocation of the sliding plate then causes the jaws to pull the bobbin inwardly along with the jaws and the plate. During this inward movement of the bobbin, the waste yarn is stripped off the staif of the bobbin by means of a pair of stripping knives 31, arranged at opposite sides of the center of the machine and adapted to be automatically pushed inwardly to a position where they embrace the bobbin stafi just behind the head of the bobbin and to be held in this position during the stripping action.

These knives 31 are pivotally attached at fixedto said shafts 36 and arranged to mesh with a driving gear 38 afiixed to a short shaft 39 which is operated by a pair of bevel pinions 4O geared up to the central power shaft 10. With this mechanism, the stripping knives will be withdrawn at the end of the stripping operation and will then be returned to operative position after afresh bobbin is laced in the machine.

After the waste is stripped off the end of the bobbin staff, the waste drops into a suitable hopper 41, while the bobbin is drawn inwardly toward the center of the machine and dropped into a separate hopper 42, the release of a clean bobbin from the jaws being accomplished by any suitable means for compressing the inner ends of the jaw levers 23 sufficiently to loosen the bobbin from the jaws. To accomplish this release and also to reengagethe latch 26 with its latch lug 27, I. arrange a pair of roller stops 43 midway the-length of the machine in such position as to serve for both pairs of jaw levers alternately. These stop rollers 43 are arranged on the under side of a transverse plate 44 fixed to the bed of the machine, thestop rollers being arranged in thepath of the jaw levers, the inner ends of the jaw levers being beveled off at 44 to form cams which strike against the rollers 43 and thus force the inner ends of the jaw levers toward each other as the jaw levers pass under the plate 44.

IVhen the bobbin is dropped onto the plates 28, it will be noted-that the slide 21 with its stop 29 is atthe inward end of its stroke. It is therefore desirable to provide means for preventing the bobbin, when it thus drops on plates 28, sliding inwardly off said plates 28. For this purpose, I pro- I vide a rocking arm 45 affixed to a rock shaft 46 journaled on the bed frame and adapted to be rocked byan arm 47', this arm 47 being normally drawn downwardly by a spring 48 and being raised against the action of said spring by abar-cam 49, affixed to the slide plate 21 and adapted to recipro- -.cate therewith, said arm 47 carrying a roller 50 which normally rests upon the upper inclined face of said bar-cam. The cam face of the member 49 is so shaped as to cause the arm 45 to descend at the proper time to will push the bobbin into position so that the fluted parts of the jaws 23 will fit the wired head of the bobbin accurately and thus insure a firm grasp of the bobbin head. The stop 29 is made adjustable by having its screw-threaded stem tapped into the end of the slide 21, the adjusted position being maintained by a jam nut 29. The under side of the plate or arm 45 is notched at 45 to prevent this member 45 from contacting with the bobbin that is being stripped while the member 45 is descending into position to operate in connection with the succeeding bobbin. One of the plates or castings 28 is grooved longitudinally at 45 to permit the arm 45 to descend into position and to also guide and steady the arm 45.

In Fig. 5 I illustrate a modification of the means for operating the jaw levers. In this form of the device, I pivot a cam 52 on the slide 21, at a point between the tail ends of the levers and fasten an" arm 53 thereto which extends laterally and overlies the stationary part of the bed frame. A spring '54 normally pulls the tail ends of the levers together, thus tending to open the jaws. Suitable trip pins or lugs 55 are afiixed to the bed plate in the path of the outer end of arm 53, the position of these lugs being such that when the slide reaches the outer end of its movement the pin will rotate the cam through the medium of the arm 53 and thus spread the inner ends of the levers and cause a positive gripping of the bobbin head, while at the other end of the stroke of the slide the other pin will rotate the cam in the opposite direction and thus permit the spring to actuate the levers to open the jaws and release the porting plates 28. As shown in dotted lines,-

the bobbins are placed in this runway with their pointed ends downwardly, the space between the plates 56 being too narrow to permit the heads to pass through, so that the heads support the bobbins as they slide down the runway. As the bobbins approach the curved part of the tracks, their depending ends drag upon an inclined plate 57 and thus gradually tilt the bobbins inwardly to a horizontal position, the bobbins reaching this horizontal position by the time they reach the end of the runway, so that they are in position to drop with their heads upon the supporting plates 28. The bobbins gravitate down this runway, and as fast as one bobbin is pulled away by the gripping jaws, another one automatically gravitates into position. As the small end of each bobbin drops off the forward end of drag plate 57, it falls upon a horizontal ledge or plate 58, Where it rests until it is pulled into the machine by the gripping jaws. A hood 59 assists in'holding the quills on the runway.

By observing Fig. 13, it will be seen that the arm 32 is connected so as to move with the rock shaft 33 through the medium of a spring connection which permits the stripping knife 31 to yield slightly-when it-1s pressed inwardly This yielding connection consists of an arm 60 affixed to shaft 33 and provided at its upper end with a hole through which a, rod 61 freely, passes, said rod 61 also passing through a lug 62 on arm 32, said bolt being provided with a head 63 engaging the outer face of the lug .62, a coil spring 64 being arranged around the bolt and kept nor- 'mally pressed against the inner face of the arm 60 by means of a washer 65 on the inner end of the bolt, said washer being held in adjustable position by a suitable nut 66. Nith this construction, it will be observed that when the shaft 33 is rocked in a direc- "tion to force the stripping knife against the bobbin staff, the spring 64 will yield slightly and thus cause a yielding action on the bobbin stafi. To normally hold the cam arm 35 against its cam and keep the stripping knife 31 normally drawn out of the path, of the bobbin, I provide a coil spring 67 a retractile spring 27'.

In Figs. 13 and 14 I show a bobbin grasping mechanism somewhat similar to both the arrangement shown in Fig. 5 and the arrangement shown in Fig. 4. In this form of the apparatus I employ a latch 26 and its cooperating lug 27, the latch 26 being drawn normally toward the latch lug by means of I also employ the spring 54 which tends to normally open the jaws, and further I employ the cam 52 for spreading the inner ends of the jaws, to thus close the gripping ends thereof upon the bobbin head. The construction I have shown in these views is desirable over the construction shown in Fig. 4 in that it provides for a positive grasping of the bobbin head, and this construction shown in Figs. 13 and 14 is advantageous over that shown against the bobbin staff.

in Fig.5 for the reason that it provides for a quicker closing of the jaws. To obtain this quicker closingaction, I connect the lever 53 by means of a rod 68 to a coil spring 69 inclosed in a cylinder 70 afiixed to the slide 21, the arrangement being such that this spring normally tends to pull the rod 68 inwardly and thus tends to normally close thejaws upon the bobbin. The jaws are held open by the latch 26, and as soon as this latch is thrown off its lug 27 by contact. with adjustable stop 30, the spring 69 (which has been by a previous action put under compression) is made free to act in opposition to the weaker spring 54, thus rotating cam 52 and quickly closing the gripping ends of the jaws upon the bobbin head. The bobbin is released at the proper point, as the slide 21 moves back toward the middle of the machine, by a stop 71 mounted on the bed frame, thus recompressing spring 69 and reengaging latch 26, this latch 26 being pulled into position normally by spring 27 It will be observed that rod 68 carries a washer 72 at its rear end which bears against a the rear end of the spring 69, this washer fitting cylinder 7 0 loosely. This cylinder is closed at its rear end and, in order to convert this rear end of the cylinder into a dash pot and thus cushion the return of the spring 69 and its actuated parts, I provide the cylinder with an air hole 7 3 near the rear end thereof.

The nature and scope of the invention having been thus indicated and its preferred embodiment having been specifically described, what is claimed as new is: i I

1. Means for feeding bobbins to a stripping machine consisting of a downwardlyinclined runway comprising a pairof separated rails between which the bobbins are suspended bytheir heads, said runway lead. ing to the bobbin-head gripping devices and a drag plate arranged underneath the runway to engage the depending ends of the bobbins and tilt the bobbins as they approach the delivery point to thus deliver them in a substantially horizontal position to the machine.

2. In a bobbin stripping machine, the combination of a slide and means for reciprocating the same, a pair of pivoted gripping jaws mounted on each end of the slide, means for opening and closingthese jaws as the slide reciprocates, a pair of stripping mem= bers arranged at opposite sides of the chine, a rock shaft journaled on the machine frame and connected to one of these strippers, a cam shaft provided with a cam, and an arm on said rock shaft co-acting with said cam for actuating the stripper member.

3. In a bobbin stripping machine, a bed frame, a slide mounted therein, a-pair of bobbin gripping jaws at each end of the slide, a pair of stripping members on the bed frame of the machine at each end of the slide slide and means for actuating these stripper members, a bobbin-engaging abutment arm at each end of the sllde, and means for automatically operatlng thls arm from the movement of the slide.

5. In a bobbin stripping machine, a'bed frame, a slide mounted therein, a pair of bobbin gripping jaws at each end of theslide, a pa1r of stripping members on the bed frameof the machine at each end of the slide and means for actuating these stripper members, a bobbin-engaging abutment arm at each end of the slide, and means for automatically operating this arm from the movement of the slide, said means consisting of a cam bar carried by the slide, a rock shaft journaled on the frame and a rocker arm 7 attached to the rock shaft and normally engaging said cam bar.

6. In a machine of the class set forth, a bobbin rest, a slide carrying a pair of bobbin grasping jaws, means for operating said jaws and said slide, and an adjustable bobbin adjuster adapted to position the bobbin head properly with respect to the jaws, said adjuster being carried by the slide.

7 In a machine of the class set forth, a pair of reciprocating bobbin grasping jaws and means for operating the same, a pair of stripping knives arranged at opposite sides and means for operating these knives, this latter means consisting of a cam operated rock shaft, an arm pivotally mounted on said rock shaft and connected to one of the knives, and a resilient connection between this arm and the rock shaft whereby the engagement of the knives with the shaft of the bobbin will be a resilient one.

8. In a machine of the class set forth, a

, held open.

9. In a machine of the class set' forth, a

slide and means for reciprocating the same,

a pair of bobbin gripping jaws pivotally mounted on said slide, a spring tending to hold these jaws normally open, a latch device normally tending to latchthe jaws open, a latch-releasing device arranged to operate when the jaws are in position to grasp the bobbin, and an automatically-operated quickopening means for the jaws including a spring more powerful than the aforesaid spring and a tripping device for putting said powerful spring into action when the latch is released.

10. In a machine of the class set forth, a bobbin rest, a slide carrying a pair of bobbin grasping jaws, means for operating said slide and said jaws, a bobbin adjuster located on the slide ata point just behind and between the jaws and adapted-to positively engage the bobbin head and push it into proper position for grasping by the jaws, means being provided for adjusting said adjuster toward and from the bobbin rest.

In testimony whereof I hereunto aflix my signature.

, WALTER W. LINDER.

Witness:

JAMES W. 'ZAcrIARY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

